Portion of a child safety seat



FIG. 1 is a front elevation view of a portion of a child safety seat showing our new design, showing in a first configuration of use;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a front elevation view of a portion of a child safety seat showing our new design, showing in a second configuration of use;

FIG. 9 is a rear elevation view thereof;

FIG. 10 is a top plan view thereof;

FIG. 11 is a bottom plan view thereof;

FIG. 12 is a left side elevation view thereof;

FIG. 13 is a right side elevation view thereof; and,

FIG. 14 is a perspective view thereof.

The broken lines of FIGS. 1, 2, 4-7 and 11 are illustrative of the visible environmental structure of the portion of a child safety seat and form no part of the claimed design. 

CLAIM The ornamental design for a portion of a child safety seat, as shown and described. 